[openfirmware] [commit] r2329 - cpu/arm

[repository service]

Author: wmb
Date: Wed Jul  6 04:17:56 2011
New Revision: 2329
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/2329

Log:
ARM - fixed hang when dividing by 0.

Modified:
   cpu/arm/muldiv.fth

Modified: cpu/arm/muldiv.fth
==============================================================================
--- cpu/arm/muldiv.fth	Sat Jul  2 08:07:31 2011	(r2328)
+++ cpu/arm/muldiv.fth	Wed Jul  6 04:17:56 2011	(r2329)
@@ -97,8 +97,11 @@
 \ r0 / tos =   r0.rem tos.quot
 code  (32/32division)
    mov     r3,#1
-\   cmp     tos,#0
+   cmp     tos,#0
 \		' divide-error	dolink eq branch
+   mvneq   tos,#0
+   moveq   pc,lk
+
    begin
       cmp     tos,#0x80000000
       cmpcc   tos,r0
@@ -118,13 +121,18 @@
 end-code
 
 code (u64division)
+   orrs    r4,r2,r3
+\  ' divide-error  bleq *
+   mvneq   r4,#0  \ Max out quotient for divide by 0
+   mvneq   r5,#0
+   moveq   pc,lk
+
    stmdb   sp!,{r7,r8,r9}
    mov     r6,#0
    mov     r7,#1
    mov     r4,#0
    mov     r5,#0
-   orrs    r8,r2,r3
-\  ' divide-error  bleq *
+
    begin
       cmp     r2,#0x80000000
       u< if